The Baby hitmaker's neighbour, who has reportedly clashed with the pop star in the past, called the Los Angeles County Sheriff's department last week (ends10Jan14) after reportedly discovering Bieber hurling eggs at his front door.

Police reportedly detained Bieber in his garage while they investigated the premises, where they allegedly found drugs in "plain view" and arrested Lil Za, real name Xavier Smith.

This is the latest in the rapper's legal woes - in December (13), he was named in a battery complaint by a photographer, who alleged he attacked him in Miami, Florida in June (13).